Brian,
I am pretty sure there is no easy answer for my question. That is why I am
more interested in you guys experience, if somebody says an OSPF area should
not be larger than 50 routers(I read this from some books) and one of us
jumps up and say I have designed one with 1000 routers in one area ans it is
working fine. Then I would like to ask that guy what kind of routers he used
at hub sites and remotes, and etc..
Of course, if you have a general rule between the RAM/CPU and the number of
the routers in the area, please let us know. I believe many of us want to
learn that. Because reading books and caculating on the paper is some thing
different than implementing something, at least it happens to me all the
time.
When say we are designing a network, it normally means our clients are
ready to take whatever suggestions we give to them to improve their network.
It makes sense that we will use total-stub area and nssa-area whereever
possible and it we believe a router in an area of 2000 routers needs to have
128M, we just suggest them to buy it or just reduce the number of routers in
the area.
Please understand that I am not asking a detailed design for me, again, I am
really interested in exchanging some of you guys experience on the scaling
of OSPF.
As Priscilla said 50 is the number Cisoc suggested, I read this from some
books too, but there are many areas larger than this, but I want to know how
far can I go? Not only one area also the whole OSPF network, Bill mentioned
that 1million routers in one OSPF network, has anybody seen one network OSPF
AS of 100 million routers?
Thanks
Jack
--
"Brian" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>
> Their are no hard and fast rules to answer questions like this. How are
> the remotes connected? What type of media/speed?
>
> do the remotes have other external connectivity other than the link to
> area0? do any of the remotes inject external routes (redistributing from
> other protocols)?
>
> If the remote links are slower circuits, then I would definitly try to
> make these totally stubby areas if possible.
>
> Let me also say, that when dealing with a network with 300 routers, alot
> more information is needed than below to properly design the OSPF. i
> would think at a minimum a good topology map and list of protocols,
> interfaces, media at each router location.
>
> Brian
>
>
> On Thu, 12 Oct 2000, Jack Walker wrote:
>
> >
> > Group,
> >
> > We are trying to design an OSPF network for one of our clients who has
about
> > 300 routers.
> > About 60 of them are in the Centeral Office, the rest of them are all
> > remotes.
> > We are thinking of put the 60 routers in the centeral into Area 0 and
also
> > put some of the remote ABRs into Area 0 too.
> > The question for your experts out there is: in the largest OSPF network
you
> > have seen, how many routers are in Area 0?
> > What is the maximun number of the routers in a non-backbone area?
> > I know there are some deisign guides out there, but I just want to get
an
> > idea what you guys seeing in the real world.
> >
> > Any inputs will be helpful.
> >
> > Thanks
> >
> > Jack
> > --
> >
> >
> >
> > _________________________________
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> >
>
> -----------------------------------------------
> Brian Feeny, CCNP, CCDP [EMAIL PROTECTED]
> Network Administrator
> ShreveNet Inc. (ASN 11881)
>
> _________________________________
> FAQ, list archives, and subscription info:
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